function fillText(texts) {
  const colorss = [
    '#eea2a4',
    '#8fb7d3',
    '#b7d4c6',
    '#c3bedd',
    '#f1d5e4',
    '#cae1d3',
    '#f3c89d',
    '#d0b0c3',
    '#819d53',
    '#c99294',
    '#cec884',
    '#ff8e70',
    '#e0a111',
    '#fffdf6',
    '#cbd7ac',
    '#e8c6c0',
    '#dc9898',
    '#5d3f51',
    '#61649f',
    '#0f59a4',
  ]; //用来设置的颜色
  var canvas = document.getElementById('canvas');
  var ctx = canvas.getContext('2d');
  let count = 1;

  var ww = window.innerWidth;
  var wh = window.innerHeight;

  var hearts = [];

  function init() {
    requestAnimationFrame(render);
    canvas.width = ww;
    canvas.height = wh;
    for (var i = 0; i < 100; i++) {
      hearts.push(new Heart());
    }
  }

  function Heart() {
    this.x = Math.random() * ww;
    this.y = Math.random() * wh;
    this.opacity = Math.random() * 0.5 + 0.5;
    this.vel = {
      x: (Math.random() - 0.5) * 4,
      y: (Math.random() - 0.5) * 4,
    };
    this.targetScale = Math.random() * 0.15 + 0.02;
    this.scale = this.targetScale * Math.random();
  }

  Heart.prototype.update = function (i) {
    this.x += this.vel.x;
    this.y += this.vel.y;

    this.scale += (this.targetScale - this.scale) * 0.01;
    if (this.x - this.width > ww || this.x + this.width < 0) {
      this.scale = 0;
      this.x = Math.random() * ww;
    }
    if (this.y - this.height > wh || this.y + this.height < 0) {
      this.scale = 0;
      this.y = Math.random() * wh;
    }
    this.width = 473.8;
    this.height = 408.6;
  };
  Heart.prototype.draw = function (i, text) {
    ctx.globalAlpha = this.opacity;
    ctx.font = `${180 * this.scale}px "微软雅黑"`;
    // ctx.font="20px";
    ctx.fillStyle = colorss[i % 18];
    ctx.fillText(
      text,
      this.x - this.width * 0.5,
      this.y - this.height * 0.5,
      this.width,
      this.height
    );
  };

  function getUrlName() {
    const getParameters = (url) =>
      JSON.parse(
        `{"${decodeURI(url.split('?')?.[1])
          ?.replace(/"/g, '\\"')
          ?.replace(/&/g, '","')
          ?.replace(/=/g, '":"')}"}`
      );
    const url = window.location.href;
    if (url.indexOf('name=') > -1) {
      const obj = getParameters(url);
      return obj.name;
    }
    return '';
  }

  function render() {
    ctx.clearRect(0, 0, ww, wh);
    var name = getUrlName();
    for (var i = 0; i < 100; i++) {
      hearts[i].update(i);
      hearts[i].draw(i, name || texts[i % texts.length]);
    }
    requestAnimationFrame(render);
  }
  init();

  window.addEventListener('resize', function () {
    ww = window.innerWidth;
    wh = window.innerHeight;
  });
}
function heartBeat() {
  /*
   * Settings
   */
  var settings = {
    particles: {
      length: 500, // maximum amount of particles
      duration: 2, // particle duration in sec
      velocity: 100, // particle velocity in pixels/sec
      effect: -0.75, // play with this for a nice effect
      size: 30, // particle size in pixels
    },
  };

  /*
   * RequestAnimationFrame polyfill by Erik M?ller
   */
  (function () {
    var b = 0;
    var c = ['ms', 'moz', 'webkit', 'o'];
    for (var a = 0; a < c.length && !window.requestAnimationFrame; ++a) {
      window.requestAnimationFrame = window[c[a] + 'RequestAnimationFrame'];
      window.cancelAnimationFrame =
        window[c[a] + 'CancelAnimationFrame'] ||
        window[c[a] + 'CancelRequestAnimationFrame'];
    }
    if (!window.requestAnimationFrame) {
      window.requestAnimationFrame = function (h, e) {
        var d = new Date().getTime();
        var f = Math.max(0, 16 - (d - b));
        var g = window.setTimeout(function () {
          h(d + f);
        }, f);
        b = d + f;
        return g;
      };
    }
    if (!window.cancelAnimationFrame) {
      window.cancelAnimationFrame = function (d) {
        clearTimeout(d);
      };
    }
  })();

  /*
   * Point class
   */
  var Point = (function () {
    function Point(x, y) {
      this.x = typeof x !== 'undefined' ? x : 0;
      this.y = typeof y !== 'undefined' ? y : 0;
    }
    Point.prototype.clone = function () {
      return new Point(this.x, this.y);
    };
    Point.prototype.length = function (length) {
      if (typeof length == 'undefined')
        return Math.sqrt(this.x * this.x + this.y * this.y);
      this.normalize();
      this.x *= length;
      this.y *= length;
      return this;
    };
    Point.prototype.normalize = function () {
      var length = this.length();
      this.x /= length;
      this.y /= length;
      return this;
    };
    return Point;
  })();

  /*
   * Particle class
   */

  var Particle = (function () {
    function Particle() {
      this.position = new Point();
      this.velocity = new Point();
      this.acceleration = new Point();
      this.age = 0;
    }
    Particle.prototype.initialize = function (x, y, dx, dy) {
      this.position.x = x;
      this.position.y = y;
      this.velocity.x = dx;
      this.velocity.y = dy;
      this.acceleration.x = dx * settings.particles.effect;
      this.acceleration.y = dy * settings.particles.effect;
      this.age = 0;
    };
    Particle.prototype.update = function (deltaTime) {
      this.position.x += this.velocity.x * deltaTime;
      this.position.y += this.velocity.y * deltaTime;
      this.velocity.x += this.acceleration.x * deltaTime;
      this.velocity.y += this.acceleration.y * deltaTime;
      this.age += deltaTime;
    };
    Particle.prototype.draw = function (context, image) {
      function ease(t) {
        return --t * t * t + 1;
      }
      var size = image.width * ease(this.age / settings.particles.duration);
      context.globalAlpha = 1 - this.age / settings.particles.duration;
      context.drawImage(
        image,
        this.position.x - size / 2,
        this.position.y - size / 2,
        size,
        size
      );
    };
    return Particle;
  })();

  /*
   * ParticlePool class
   */
  var ParticlePool = (function () {
    var particles,
      firstActive = 0,
      firstFree = 0,
      duration = settings.particles.duration;

    function ParticlePool(length) {
      // create and populate particle pool
      particles = new Array(length);
      for (var i = 0; i < particles.length; i++) particles[i] = new Particle();
    }
    ParticlePool.prototype.add = function (x, y, dx, dy) {
      particles[firstFree].initialize(x, y, dx, dy);

      // handle circular queue
      firstFree++;
      if (firstFree == particles.length) firstFree = 0;
      if (firstActive == firstFree) firstActive++;
      if (firstActive == particles.length) firstActive = 0;
    };
    ParticlePool.prototype.update = function (deltaTime) {
      var i;

      // update active particles
      if (firstActive < firstFree) {
        for (i = firstActive; i < firstFree; i++)
          particles[i].update(deltaTime);
      }
      if (firstFree < firstActive) {
        for (i = firstActive; i < particles.length; i++)
          particles[i].update(deltaTime);
        for (i = 0; i < firstFree; i++) particles[i].update(deltaTime);
      }

      // remove inactive particles
      while (
        particles[firstActive].age >= duration &&
        firstActive != firstFree
      ) {
        firstActive++;
        if (firstActive == particles.length) firstActive = 0;
      }
    };
    ParticlePool.prototype.draw = function (context, image) {
      // draw active particles
      if (firstActive < firstFree) {
        for (i = firstActive; i < firstFree; i++)
          particles[i].draw(context, image);
      }
      if (firstFree < firstActive) {
        for (i = firstActive; i < particles.length; i++)
          particles[i].draw(context, image);
        for (i = 0; i < firstFree; i++) particles[i].draw(context, image);
      }
    };
    return ParticlePool;
  })();

  /*
   * Putting it all together
   */
  (function (canvas) {
    var context = canvas.getContext('2d'),
      particles = new ParticlePool(settings.particles.length),
      particleRate = settings.particles.length / settings.particles.duration, // particles/sec
      time;

    // get point on heart with -PI <= t <= PI
    function pointOnHeart(t) {
      return new Point(
        160 * Math.pow(Math.sin(t), 3),
        130 * Math.cos(t) -
          50 * Math.cos(2 * t) -
          20 * Math.cos(3 * t) -
          10 * Math.cos(4 * t) +
          25
      );
    }

    // creating the particle image using a dummy canvas
    var image = (function () {
      var canvas = document.createElement('canvas'),
        context = canvas.getContext('2d');
      canvas.width = settings.particles.size;
      canvas.height = settings.particles.size;
      // helper function to create the path
      function to(t) {
        var point = pointOnHeart(t);
        point.x =
          settings.particles.size / 2 +
          (point.x * settings.particles.size) / 350;
        point.y =
          settings.particles.size / 2 -
          (point.y * settings.particles.size) / 350;
        return point;
      }
      // create the path
      context.beginPath();
      var t = -Math.PI;
      var point = to(t);
      context.moveTo(point.x, point.y);
      while (t < Math.PI) {
        t += 0.01; // baby steps!
        point = to(t);
        context.lineTo(point.x, point.y);
      }
      context.closePath();
      // 修改爱心颜色
      context.fillStyle = '#eea2a4';
      context.fill();
      // create the image
      var image = new Image();
      image.src = canvas.toDataURL();
      return image;
    })();

    // render that thing!
    function render() {
      // next animation frame
      requestAnimationFrame(render);

      // update time
      var newTime = new Date().getTime() / 1000,
        deltaTime = newTime - (time || newTime);
      time = newTime;

      // clear canvas
      context.clearRect(0, 0, canvas.width, canvas.height);

      // create new particles
      var amount = particleRate * deltaTime;
      for (var i = 0; i < amount; i++) {
        var pos = pointOnHeart(Math.PI - 2 * Math.PI * Math.random());
        var dir = pos.clone().length(settings.particles.velocity);
        particles.add(
          canvas.width / 2 + pos.x,
          canvas.height / 2 - pos.y,
          dir.x,
          -dir.y
        );
      }

      // update and draw particles
      particles.update(deltaTime);
      particles.draw(context, image);
    }

    // handle (re-)sizing of the canvas
    function onResize() {
      canvas.width = canvas.clientWidth;
      canvas.height = canvas.clientHeight;
    }
    window.onresize = onResize;

    // delay rendering bootstrap
    setTimeout(function () {
      onResize();
      render();
    }, 10);
  })(document.getElementById('pinkboard'));
}
function lineHeartAni() {
  var heart = document.getElementById('heart');
  var ctx = heart.getContext('2d');
  var radian_cal = 0;
  var radian_add = Math.PI / 180;
  var x, y;
  ctx.beginPath();

  ctx.shadowBlur = 3;
  ctx.shadowColor = '#eea2a4';
  ctx.strokeStyle = '#eea2a4';

  ctx.translate(500, 300);

  ctx.moveTo(calX(radian_cal), calY(radian_cal));

  function draw() {
    if (radian_cal <= 2 * Math.PI) {
      radian_cal += radian_add;
      x = calX(radian_cal);
      y = calY(radian_cal);
      ctx.lineTo(x, y);
      ctx.stroke();
    } else {
      clearInterval(time);
      ctx.fillStyle = '#eea2a4';
      ctx.fill();
      fillText();
      heartBeat();
      var heartAni = document.getElementById('heart');
      heartAni.classList.add('heart');
    }
  }
  var scaleSize = 8;
  var xscaleSize = 16;
  if (navigator.userAgent.includes('Mobile')) {
    scaleSize = 2;
    xscaleSize = 48;
  }

  function calX(p) {
    return scaleSize * xscaleSize * Math.pow(Math.sin(p), 3);
  }

  function calY(q) {
    return (
      -scaleSize *
      (13 * Math.cos(q) -
        5 * Math.cos(2 * q) -
        2 * Math.cos(3 * q) -
        Math.cos(4 * q))
    );
  }
  var time = setInterval(draw, 10);
}

